Articles
EVALUATION OF NEW STRAWBERRY CULTIVARS AND OF BENEFICIAL MICROBES TO IMPROVE STRAWBERRY PRODUCTION IN VERTICILLIUM-INFESTED SOILS
Article number
838_22
Pages
133 – 138
Language
English
Abstract
Verticillium sp. causes plant loss and yield decrease in many Austrian strawberry regions. Elsanta, the main early-mid season strawberry cultivar, is highly susceptible to soil-borne pathogens.
Aims of this project were, 1) to test new strawberry cultivars in different Austrian strawberry regions regarding their robustness to soil-borne and fruit diseases to serve as alternative to Elsanta, and 2) to test the application of beneficial microbes to increase the tolerance of Elsanta. Thirteen cultivars were planted in 2005 at eleven sites.
Infestation with Verticillium dahliae was evaluated in 2005 and 2006 at seven sites and at three sites in 2007. Marketable yield and percentage of unmarketable fruits were assessed on two of the sites in 2006 and 2007. Elsanta showed the highest infestation with V. dahliae whereas Salsa and Daroyal were highly tolerant.
Of all early ripening cultivars tested, Darselect showed the highest yield, followed by Elsanta, Daroyal, and Alba. In conclusion, Alba, Clery, Daroyal, and Queen Elisa are recommended as new alternatives to Elsanta. In the inoculation trial, the following microorganisms were chosen: Bacillus subtilis (FZB24), Trichoderma harzianum (Promot), and Serratia plymuthica (Rhizostar). The effects of these products were tested in a substrate inoculated with V. dahliae and in a non-inoculated substrate.
In 2007 and 2008, fruit yield and fruit quality parameters were assessed, and in 2008, leaf and root dry weights were measured.
Plants showed no symptoms of Verticillium wilt in both years.
Plants treated with Rhizostar had a significantly higher leaf dry weight.
No other significant differences between the treatments were found, neither in yield nor in fruit quality parameters.
Aims of this project were, 1) to test new strawberry cultivars in different Austrian strawberry regions regarding their robustness to soil-borne and fruit diseases to serve as alternative to Elsanta, and 2) to test the application of beneficial microbes to increase the tolerance of Elsanta. Thirteen cultivars were planted in 2005 at eleven sites.
Infestation with Verticillium dahliae was evaluated in 2005 and 2006 at seven sites and at three sites in 2007. Marketable yield and percentage of unmarketable fruits were assessed on two of the sites in 2006 and 2007. Elsanta showed the highest infestation with V. dahliae whereas Salsa and Daroyal were highly tolerant.
Of all early ripening cultivars tested, Darselect showed the highest yield, followed by Elsanta, Daroyal, and Alba. In conclusion, Alba, Clery, Daroyal, and Queen Elisa are recommended as new alternatives to Elsanta. In the inoculation trial, the following microorganisms were chosen: Bacillus subtilis (FZB24), Trichoderma harzianum (Promot), and Serratia plymuthica (Rhizostar). The effects of these products were tested in a substrate inoculated with V. dahliae and in a non-inoculated substrate.
In 2007 and 2008, fruit yield and fruit quality parameters were assessed, and in 2008, leaf and root dry weights were measured.
Plants showed no symptoms of Verticillium wilt in both years.
Plants treated with Rhizostar had a significantly higher leaf dry weight.
No other significant differences between the treatments were found, neither in yield nor in fruit quality parameters.
Authors
H. Weissinger, A. Spornberger, K. Jezik, R. Steffek, K. Stich
Keywords
Fragaria, cultivar, Verticillium, beneficial microbes, fruit quality
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